Method for preparing deodorizing bamboo pulp cellulose nonwoven fabrics through spun-bond mode

Abstract

The invention relates to a method for preparing deodorizing bamboo pulp cellulose nonwoven fabrics through a spinning-bonding mode. The method comprises the following steps: adding a proper amount of coffee residue into bamboo pulp to be used as a raw material; then adding N-methylomrpholine N-oxide which is called an NMMO solvent for short; mixing and dissolving to obtain a dope; extruding through a spinning opening by the spun-bond mode to form long bamboo cellulose strands; performing air gap cooling and stretching; feeding the long bamboo cellulose strands into solidification liquid to solidify and regenerate; then stretching at a high speed through an airflow stretcher; collecting nonwoven fabrics which are overlapped in a net shape on a collecting net; performing water washing, water-injection rolling, drying and coiling for the net-shaped nonwoven fabric, thus obtaining the continuous long-fiber type deodorizing bamboo pulp cellulose nonwoven fabrics.

Description

technical field [0001] The invention relates to a method for preparing bamboo pulp cellulose nonwoven fabric with deodorizing function by spunbonding, which belongs to the technical field of bamboo fiber manufacturing, and the manufacturing process adopts an environmentally friendly process that will not cause environmental pollution, and the prepared bamboo pulp cellulose The finished spunbonded nonwoven fabric is in the form of long fibers, and has good air permeability, water absorption, and deodorizing properties. It can be used in textiles, medical care, beauty, hygiene materials, filter materials, biotechnology materials, and photoelectric wafer wiping and other uses. Background technique [0002] At present, the largest amount of raw materials used in the production of non-woven fabrics made of man-made synthetic fibers are polypropylene (PP), polyester (PET), polyethylene (PE) and nylon (Nylon). When these large amounts of man-made synthetic fiber non-woven fabrics ...

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Problems solved by technology

[0003] It has been confirmed by studies such as "Technical Development and Utilization of Bamboo Charcoal in Textiles" published by the Forestry Experiment of the Domestic Council of Agriculture, and "New Regenerated Cellulose Cellulose-Bamboo Fiber" published in the second issue of China Shandong Textile Science and Technology Journal in 2003. Bamboo fiber has the characteristics of natural antibacterial, moisture-absorbing and breathable, and negative ion health care. Bamboo is a fast-growing plant with strong reproductive ability (it can be cut down in 2 to 3 years), and it is easy to regenerate. It is an excellent renewable resource. There will be problems such as when the forest is felled, the resulting forest environment and ecology will be seriously damaged. In addition, the cost of bamboo pulp is only one-third of that of wood pulp. Therefore, the solvent method used to manufacture Lyocell fiber is used as the production of bamboo fiber. Seen in many patent documents, for example: Chinese invention patents CN1129680, CN1190531, CN1315624 and CN100395384 etc. are all, can know from the technical content of each Chinese invention patent disclosed, the bamboo fiber of its production gained does not have the effect of deodorization

[0004] According to statistics from the Customs Bureau of the Ministry of Finance of Taiwan, China, the import volume of coffee beans reached 17,685 metric tons in 2011, and the amount of waste coffee grounds after roasting and use reached at least 8,842 metric tons (the ratio of coffee beans to used coffee beans is about 2:1). At present, there are more than 8,842 metric tons of waste coffee grounds per year, most of which are directly incinerated or buried, and a small part is used to remove odors because of the deodorizing effect of coffee grounds, or as a supply for plants Nutrients, or as a cleaning function; in addition, some people have applied it to make coffee yarn, such as China Taiwan Invention Patent No. I338729, from the technical content disclosed by the coffee yarn, it can be known that it combines coffee grounds and polymers After the polymer particles are mixed to make masterbatches, the masterbatches are spun into yarns, and the high molecular polymer particles used are selected from polypropylene, nylon and polyester. Therefore, the fabric made through the coffee yarn, Because it contains high molecular polymers such as polypropylene, nylon or polyester, it will not be decomposed by the natural environment when it becomes waste after use, and it will still cause harm to the environment.

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